20122640

素因数分解:

$2^4\times 5^1\times {\mathrm{251533}}^1$

素因数の和:251546

約数の個数: 20

約数和(自身を含む): 46785324

約数和(自身を除く): 26662684

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251533, 503066, 1006132, 1257665, 2012264, 2515330, 4024528, 5030660, 10061320, 20122640]

約数ペア:

[(1, 20122640), (2, 10061320), (4, 5030660), (5, 4024528), (8, 2515330), (10, 2012264), (16, 1257665), (20, 1006132), (40, 503066), (80, 251533)]